A kind of low filling high performance tire tread compound and tire

Abstract

The invention belongs to the field of manufacturing of rubber tires, and relates to a low-filling high-performance tire tread rubber material and a tire, wherein the tire tread rubber material is formed by mixing the following raw materials by weight: 25.0-50.0 parts of natural rubber, 5.0-30.0 parts of a solution polymerized styrene-butadiene rubber A, 40.0-80.0 parts of a solution polymerized styrene-butadiene rubber B, 40.0-50.0 parts of white carbon black, 0.5-10.0 parts of carbon black, 4.0-10.0 parts of a silane coupling agent, 1.0-6.0 parts of a white carbon black dispersing agent, 2.0-10.0 parts of a road-holding resin, and 0.5-3.0 parts of an anti-reversion agent. According to the present invention, the tire tread rubber material uses a large amount of the natural rubber, is lessfilled with the filler, such that the high tensile strength and the high elongation at break can be achieved, the requirements of low rolling resistance and high wet gripping of the tire can be met, and the rolling resistance and the wet road-holding ability can meet the Class B stipulated by the EU Tire Labeling Regulation.

Description

technical field [0001] The invention belongs to the field of rubber tire manufacturing and relates to a low-filling high-performance tire tread compound and a tire. Background technique [0002] As we all know, tire rolling resistance and wet grip are the two most important items in tire labeling law. Reducing tire rolling resistance and improving tire grip in the wet have been hot topics in the tire industry since labeling laws became mandatory in Europe in 2012. [0003] At present, the major tire companies adopt the main method of reducing rolling resistance and improving wet grip by using functional solution polystyrene butadiene rubber, filling a large amount of silica and silane coupling agent, and improving the dispersion of silica in the rubber matrix through silanization reaction. , so as to achieve the above-mentioned purpose. However, filling a large amount of silica will bring the following problems: [0004] (1) There are more hydroxyl groups on the surface o...

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Problems solved by technology

[0004] (1) There are more hydroxyl groups on the surface of silica, which is easy to agglomerate in rubber and difficult to process

If there is no better mixing equipment (such as a single-stage internal mixer in series), a longer mixing time (reducing production efficiency and increasing energy consumption) will result in insufficient silanization reaction, not only failing to reduce rolling resistance, The purpose of wet grasping will instead cause scorch due to the agglomeration of silica

[0005] (2) Filling a large amount of silica will greatly increase the modulus of the formula, resulting in a decrease in the tensile strength and elongation at break of the rubber compound, resulting in the phenomenon that the tire is not resistant to punctures, cracks, and blocks.

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